A. 1. Check compatibility: Visit the app's page on the Google Play Store to see the list of compatible devices. 2. Update your device: Ensure your device's operating system is up to date, as older versions may not support the app. 3. Clear app cache: If the app is installed but not functioning, clear the cache as mentioned previously.

B. 4. Use an alternative device: If possible, try using the app on a different device that meets the compatibility requirements.